�y��vlog

They screen for chromosomal disorders such as trisomy 13 and 18, which often end in miscarriage or stillbirth, Down syndrome and extra or missing copies of sex chromosomes.

Even now, a year later, Igler said, expectant parents come into her office with the assumption that if their fetus has a lethal genetic disorder, like anencephaly or trisomy 13 or 18, they can end the pregnancy safely.

She ended her pregnancy last year after scans showed the fetus had a brain abnormality and other signs of the genetic disorder trisomy 13.

In Pittsburgh, Tracee Miller, 38, was devastated when a prenatal genetic screening 12 weeks into her pregnancy showed that her fetus likely had a genetic condition called Trisomy 13.

Anna Prochnow, 16, of Markesan, Wis., was born with trisomy 13, a genetic condition.